#pragma once
#include <iostream>
#include "Protocol.hpp"

class Calculator 
{
public:
    Calculator(){}

    Response Execute(const Request& req)
    {
        Response resp;
        switch(req.Oper())
        {
        case '+':
            resp.SetResult(req.X() + req.Y());
            break;
        case '-':
            resp.SetResult(req.X() - req.Y());
            break;
        case '*':
            resp.SetResult(req.X() * req.Y());
            break;
        case '/':
            {
                if(req.Y() == 0)
                {
                    resp.SetCode(1); //1 就是除0
                }
                else
                {
                    resp.SetResult(req.X() / req.Y());
                }
            }
            break;
        case '%':
            {
                if(req.Y() == 0)
                {
                    resp.SetCode(2); //2 就是mod 0
                }
                else
                {
                    resp.SetResult(req.X() / req.Y());
                }
            }
            break;
        default:
            resp.SetCode(3); //0 3 用户发来的计算类型，无法识别 
            break;
        }
        return resp;
    }

    ~Calculator()
    {}
};